Ceratiocaridæ from the upper Devonian measures in Warren County
By: by Chas. E. Beecher. Eurypteridæ from the lower productive coal measures in Beaver County, and the lower Carboniferous, pithole shale, in Venango County, by James Hall.
Contributors: Hall, James, 1811-1898.
Series: Pennsylvania. Geological Survey, 2d. Report of progress PPP
Publisher: Pub. by the Board of Commissioners for the Second Geological Survey
Published: 1884
Place of publication: Harrisburg
Language: eng
Number of pages: 39
Subjects: Fishes, Fossil.; Eurypterida.; Paleontology -- Pennsylvania.; Paleontology -- Devonian.; Paleontology -- Carboniferous.